A simple ketone as an efficient metal-free catalyst for visible-light-mediated Diels–Alder and aza-Diels–Alder reactions
作者:Jiri Kollmann、Yu Zhang、Waldemar Schilling、Tong Zhang、Daniel Riemer、Shoubhik Das
DOI:10.1039/c9gc00485h
日期:——
Diels–Alder reactions are highly effective between electron-rich dienes and electron-poor dienophiles. However, these reactions with electron-rich dienophiles are limited and require forcing conditions. Based on this, an efficientmetal-free homogeneous system has been developed for the Diels–Alder reactions between electron-rich dienophiles and dienes under visible-light conditions. Additionally,
A PMMA-based heterogeneous photocatalyst for visible light-promoted [4 + 2] cycloaddition
作者:Niklas Huber、Run Li、Calum T. J. Ferguson、Dominik W. Gehrig、Charusheela Ramanan、Paul W. M. Blom、Katharina Landfester、Kai A. I. Zhang
DOI:10.1039/d0cy00016g
日期:——
Macromolecular organic photocatalysts consisting of a completely conjugated network have broad and promising applications in visible light-promoted photoredox catalysis. Precise reproduction and control of exact conjugation length remains an important challenge for fully conjugated and macromolecular photocatalysts. Here, we introduce a new photocatalytic material based on classical PMMA copolymerised